found it it was at the bottom of the lump at the front pain to get to but found it there thanks anywayfound it it was at the bottom of the lump at the front pain to get to but found it there thanks anyway

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P2647
VTEC Oil Pressure Switch Circuit High Voltage - With Automatic Transmission
Basicallly the sensor has gone bad or an oil passage has become blocked.

**. Locate the Variable Timing Electronic Control (VTEC) pressure switch on the end of the cylinder head. Honda has had problems with the VTEC oil pressure switch, there is an updated part number for the vehicle (37250-PNE-G01). On this vehicle the VTEC oil pressure switch can fail at any RPM.2. The VTEC oil switch is normally closed, and grounds the reference voltage from the Engine Control Module (ECM) on the Blue/Black (BLU/BLK) wire. If the code sets at idle - 2500 RPM - and the Brown/Yellow wire has a good ground, then suspect a faulty VTEC oil pressure switch. 3. At approximately 2500-4000 RPM and when driving the vehicle, the VTEC system should turn on. To turn on the system, the ECM energizes the VTEC Solenoid valve and it allows oil pressure into the intake valve rocker arms, the oil pressure opens the VTEC oil pressure switch so the Engine Control Module (ECM) can verify that the VTEC did turn on correctly. 4. The code will set at idle to 2500 RPM if the reference voltage is not grounded. The code will set above 2500-4000 RPM if the VTEC oil switch does not open. 5. If the code sets at 2500-4000 RPM or higher, the problem can be a low oil level or pressure, or a malfunction in the VTEC assembly. Potential Causes:
Low Engine OilPlugged Oil PassageInsufficient Oil PressurePlugged Oil ScreenInsufficient Oil VolumeMalfunctioning VTEC Oil Pressure SwitchDefective VTEC Solenoid

Honda say thats not true and to wait until the car tells you when to change it. I have a 2008 CRV and you should and can wait till the oil say 15%! We took ours in after a long road trip for our first oil change. We had over 5K and the oil said 65%. The guy said that we did not need to bring it in. We still had change it while it was their but the car goes around 8-9 K on a oil change. A little wrench will come on and the oil life % will come on when it reach15% and will come on every time you start the car till you get it changed.

On my 2007 CRV, I have to hold it long. Since I hardly use the rear sprayer, there is no liquid in the hose and it does take a little while before I get enough liquid in the hose to get the pressure going.